# N91CD: 2009 Duncan Cary WILLOW CREEK CUB

- Status: Valid registration
- Airframe: [Duncan Cary WILLOW CREEK CUB](https://openairdocs.org/model/duncan-cary-willow-creek-cub) (registry code 05627SV, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 1
- Year built: 2009
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: March 11, 2009
- Certificate issued: January 14, 2009
- Expires: July 31, 2029
- Mode S code: AC9488
- Registered owner: [Duncan Cary J](https://openairdocs.org/faa-owner/DUNCAN%20CARY%20J)
- Location: [Helena, MT](https://openairdocs.org/faa-place/MT/Helena)
- Owner type: Individual
- Owner's area on the map: 46.5307° N, 112.1994° W: Placed by OpenAirDocs at the center of ZIP code 59601, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=91CD
- Page: https://openairdocs.org/aircraft/N91CD

From the FAA registry file of October 22, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Duncan Cary WILLOW CREEK CUB)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N91CD.

## FAA accident and incident reports

None matched to N91CD.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N91CD

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N91CD before.

- [Cancelled 2001-12-04](https://openairdocs.org/deregistered/N91CD-2001-12-04): Boeing 737-86Q, S/N 30274. Exported to Australia. Owner: [Boullioun Aircraft Holding Co Inc](https://openairdocs.org/faa-owner/BOULLIOUN%20AIRCRAFT%20HOLDING%20CO%20INC), [Bellevue, WA](https://openairdocs.org/faa-place/WA/Bellevue)

## Related

- Other Duncan Cary WILLOW CREEK CUB aircraft: https://openairdocs.org/model/duncan-cary-willow-creek-cub/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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